sunmi_k2_printer_plus

This is a fork from sunmi_printer , but i implemented a lot of other features described below

Important:

THIS PACKAGE WILL WORK ONLY IN ANDROID!

Support Sunmi and Null Safety. I build this flutter plugin based on this: Official Sunmi Inner Printer Doc. But not all method from doc was included in this package, beacuse i don't have equipment. If you have and can help me, just contact me on github!

Installation

flutter pub add sunmi_k2_printer_plus

What this package do

• Write some text (with style or not!)
• Change font size
• Jump (n) lines
• Draw a divisor line
• Bold mode on/off
• Print all types of Barcodes (see enum below)
• Print Qrcodes with custom width and error-level
• Print image from asset or from web (example show how to print both)
• Print rows like recepit with custom width and alignment
• Able to combine with some esc/pos code that you already have!
• Cut paper - Dedicated method just to cut the line
• Printer serial no - Get the serial number of the printer
• Printer version - Get the printer's version
• Printer paper size - Get the paper size ( 0: 80mm 1: 58mm)
• LCD Print a image ytyng
• LCD Print a string , multi lines as double lines Thanks to ytyng
• Open de cash drawer Thanks to ZheruiL
• Check if the cash drawer is connected or not
• Get how many times the cash drawer was oppened

Tested Devices

Sunmi V2 Pro 
Sunmi T2 mini
Sunmi V2S

You can also combine this package with the package esc_pos_utils

With this package you can create a custom escpos and than you don't need to use any other command. This is good if you already have a code that another printers use, and u can reuse this code as well

#Just see the example folder!

// import packages
import 'package:sunmi_k2_printer_plus/sunmi_k2_printer_plus.dart';


// all method from sunmi printer need to async await
await SunmiPrinter.bindingPrinter(); // must bind the printer first. for more exmaple.. pls refer to example tab.

Example code when use for transaction printing

  await SunmiPrinter.startTransactionPrint(true);

  await SunmiPrinter.setAlignment(SunmiPrintAlign.RIGHT); // Right align
  await SunmiPrinter.printText('Align right');

  await SunmiPrinter.setAlignment(SunmiPrintAlign.LEFT);// Left align
  await SunmiPrinter.printText('Align left');

  await SunmiPrinter.setAlignment(SunmiPrintAlign.CENTER);// Center align
  await SunmiPrinter.printText('Align center');

  await SunmiPrinter.lineWrap(2); // Jump 2 lines

  await SunmiPrinter.setFontSize(SunmiFontSize.XL); // Set font to very large
  await SunmiPrinter.printText('Very Large font!');
  await SunmiPrinter.resetFontSize(); // Reset font to medium size

  await SunmiPrinter.setCustomFontSize(12); // SET CUSTOM FONT 12
  await SunmiPrinter.printText('Custom font size!!!');
  await SunmiPrinter.resetFontSize(); // Reset font to medium size

  await SunmiPrinter.printQRCode('https://github.com/brasizza/sunmi_printer'); // PRINT A QRCODE
  await SunmiPrinter.submitTransactionPrint(); // SUBMIT and cut paper
  await SunmiPrinter.exitTransactionPrint(true); // Close the transaction

Example code for LCD functions @ytyng

 await SunmiPrinter.lcdInitialize(); //Initialize the LCD 
 await SunmiPrinter.lcdWakeup(); //Turn the LCD ON
 await SunmiPrinter.lcdSleep(); //Turn the LCD OFF
 await SunmiPrinter.lcdClear(); //Clear LCD screen
 await SunmiPrinter.lcdString('Hello'); //Write a simple line 
 await SunmiPrinter.lcdString('Hello'); //Write a simple line 
 await SunmiPrinter.lcdDoubleString('Hello', 'World'); //Write two lines

 Uint8List byte = await readFileBytes('assets/images/128x40.png');
 await SunmiPrinter.lcdImage(byte); // Put an image in LCD
 await SunmiPrinter.lcdFillString('abcDEFgj0123\$&=+', size: 16, fill: true); // Print a string and fill with zeros until the size is reached
 await SunmiPrinter.lcdMultiString([  'Welcome to flutter.',  'Align 2.',], [  1,  2,]); // Write multiple lines with alignent

Example to open the cashier @ZheruiL

  bool await SunmiPrinter.drawerStatus(); //check if the cash drawer is connect or disconnect

  await SunmiPrinter.openDrawer(); //open de cash drawer

  int await SunmiPrinter.drawerTimesOpen(); //How many times de cash drawer was oppened

List of enum printer mode

enum PrinterMode {
  NORMAL_MODE,
  BLACK_LABEL_MODE, 
  LABEL_MODE
}

List of enum Alignments

enum SunmiPrintAlign {
  LEFT,
  CENTER,
  RIGHT,
}

List of enum Qrcode levels

enum SunmiQrcodeLevel {
  LEVEL_L,
  LEVEL_M,
  LEVEL_Q,
  LEVEL_H,
}

List of enum Barcode types

enum SunmiBarcodeType {
  UPCA,
  UPCE,
  JAN13,
  JAN8,
  CODE39,
  ITF,
  CODABAR,
  CODE93,
  CODE128,
}

List of enum Text position in barcode

enum SunmiBarcodeTextPos {
  NO_TEXT,
  TEXT_ABOVE,
  TEXT_UNDER,
  BOTH,
}

List of enum Font sizes

enum SunmiFontSize {
  XS,
  SM,
  MD,
  LG,
  XL,
}